World Resorts Norway Oslo Weather

Oslo Sea Temperature in September

Average sea water temperature in September:
+59.8°F
Minimum sea water temperature in September: 65.3°F
Maximum sea water temperature in September: 54.3°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 60.7°F. The highest and lowest sea temperatures during the month were 64.8°F and 56.3°F.

Monthly sea water temperature in Oslo, °F

Which Norway resorts have warmest sea in September?

Place name September 2025 September 2024
Holmenkollen 60.7°F 60.2°F
Oslo 60.7°F 60.3°F
Stavanger 60.0°F 59.6°F
Ålesund 57.5°F 57.3°F
Bergen 56.8°F 57.3°F
Trondheim 56.0°F 56.8°F
Tromse 50.4°F 53.3°F

Best time for vacation in Oslo

Sunniest months:
June 11 days
May 11 days
July 11 days
Warmest months:
July 68.4 °F
August 65.4 °F
June 64.6 °F
Warmest sea temp:
July 65.7 °F
August 65.1 °F
June 60.3 °F
Coldest months:
January 24.7 °F
February 28.5 °F
December 29.0 °F
Rainiest months:
May 6 days
August 6 days
July 6 days
Windiest months:
May 6.4 mph
June 6.1 mph
April 6.0 mph

Oslo on a weather map

Current weather
19:36
Oslo
+52°F
NW 1 mph
Feels like: +52°F
Precip.: 0%
Places in Norway:
Name
°F
Bergen
+50°F
Lillehammer
+48°F
Ålesund
+48°F
Oslo
+52°F
Stavanger
+52°F
Tromse
+48°F
Trondheim
+48°F
Flam
+37°F
Hemsedal
+46°F
Holmenkollen
+55°F
24 Hours Forecast
Oslo
Local time: 19:36
May 21, thursday
2100
52°F
NW
1 mph
May 22, friday
0000
46°F
S
3 mph
0300
45°F
S
4 mph
0600
46°F
SE
3 mph
0900
61°F
E
1 mph
1200
66°F
NE
6 mph
1500
70°F
NE
7 mph
1800
66°F
N
9 mph
Units of measurement: °C / °F